C.
Since it is flipping vertically, it is going OVER the x-axis which is the axis that runs horizontally.
Answer:
Step-by-step explanation:
The given expression is

We will rewrite the expression

When we add the fraction
=
= 8
While Andre says the answer is 
because Andre added the denominator where he has to make a common denominator that should be 4 instead of 8.
Andre made mistake in this step
Picture is given below :
Answer:
31
Step-by-step explanation:
because if you subtract 39 from 41 that gives you the answer on how much if a difference there is
Answer:
17
Step-by-step explanation: